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Nov. 13, 1 24- 1,516,057,

E. OSTMEYER KEY LOCKING DEVICE FOR CASH REGISTERS Filed Oct. 26. 192]Emu Patented Nov. 18, 1924.

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EDUARD OSTMEYER, OF ESSEN-MAR-GARETHENHOHE, GERMANY, ASSIGNOR TO FRIED.KRUZPP AKTIENGESELLSCHAFT, OF ESSIEN-ON-THE-RUHR, GERMANY.

KEY LOCKING DEVICE FOR CASH REGISTERS.

Application filed October 26, 1921. Seriafl No. 510,567.

To all whom it may concern:

Be it known that I, EDUARD OSTMEYER, residing at Essen-Margarethenhohe,Germany, a citizen of the German Republic, have invented a certain newand useful Improvement in Key Locking Devices for Cash Registers, ofwhich the following is a specification.

The present invention relates to a key locking device for cashregisters, the characteristic feature of which is that the key ispositively connected to a plug of a safety lock which is locked when thekey of the look is not inserted and unlocked when this key is insertedin the lock. The new looking device diiiers by this featureadvantageously from the known locking devices of this kind, in which thekey is so connected to a safety lock that the key is only released byrotating the lock key inserted in the lock.

The invention will be described with reference to an example of thesubject-matter oi the invention shown in the accompanying drawing, inwhich:

Fig. 1 is a horizontal section through a key board above a key and theplug of the corresponding safety lock.

Fig. 2 is a View corresponding to Fig. 1 with the parts in a differentposition.

Furthermore, on a larger scale,

Fig. 3 is a horizontal section through the safety lock and Fig. 4: is asection on the line 4 -4: of Fig. 8.

In the key board A there is arranged alongside each key B whichregisters the particular operator using the cash register a safety lock(see Figures 1 and 2) the casing of which is formed by a part a of thekey board and whose plug is denoted by C. The plug C which is providedwith a journal-shaped extension 0 is adapted to rotate in a shouldereddown boring a in the easing a running parallel with the longitudinalaxis of the key B. The plug is held in the boring a by a ring D screwedinto the front wall of the casing a The tumbler of the safety lock isconstructed as in a. Yale lock. The plug G has for this purpose a radiallongitudinal slot 0 in it (see Figures 3 and 4) the inner part of whichserves to guide the key E of the lock and the outer part of whichreceives a number of tumbler pins F. Against these and acted upon bysprings 9 By means of the described tumbler the plug 0 is prevented fromrotating when the key of the lock is withdrawn, as is well known, while.after thekey has been inserted ,theplug can be rotated and when it hasbeen rotated the key is' prevented from being withdrawn.

. B'igidly connected to the key B is an arm H which extends at rightangles to the key B (see Figures 1 and 2) and projects through a slot (0in the casing a and engages with its free end It? in a helical groove 0in the plug C. The arrangement is also so devised that when the key B isdepressed the plug C has a rotation of 90 imparted to it by thecooperation of the arm Hwith the groove 0 The extension 0 of the plug Cis provided with an excentrically arranged cam 0 In the position of restof the plug C this cam lies outside the path of an adjusting member J(see Fig. 1) of the till which is moved when the machine is operated butwhen the plug is rotated through an angle of 90 the cam 0 is moved intothe path of the member J (see Fig. 2) and then forms a stop which limitsthe movement of this member.

The foot 5 of the operator key B serves when the key is depressedlikewise as a stop for an adjusting member K on the till, and a shoulder15 on the key is provided for the purpose of cooperating with a slide M,in order to release the till and switch on the driving motor in the wellknown way.

The locking of the key connected to the safety lock is undone aspreviously ex* plained by the introduction of the key E into the lock,and it is therefore not neces sary to rotate the key also by hand forthe purpose of releasing the key B. On the depression of the releasedkey 13 the key E is locked against being withdrawn and the cam 0 of theplug 0 is set in the position in which it acts as a stop so that, inaddition to the foot 6 of the key B which acts as a stop for a gearmember (K) provided say for the adjustment of the adding mechanism usedby the particular operator, a second stop (the cam 0 is simultaneouslyalso moved into the path of a second gear member (J) which eflects theadjustment of say the operators distinctive letter.

The new arrangement consequently af- 2 ment of a key controlled lockingmember rofords the advantage that by the depression of a keytheadjustment of two gear members which become operative in differentperiods of the operation of the till, is prepared. The turning back ofthe plug Cot the safety look into the original position takes placepositively on the return movement of the key 13, Which is effected bythe cancelling of the keys.

Claims:

1; The combination With a sliding ele mentof a locking device comprisinga key controlled locking member rotatable in unlockedposition and meansconnecting said locking member to said sliding member whereby saidlocking member is rotated Epon adisplacement of said sliding mem- 2. Thecombination With a sliding eletatable in unlocked position, said:locking member being formed Witha helical groove and an arm connected tosaid sliding element and engaging said groove for, rotating said lockingmember upon a displacement of said sliding element.

3. The combination With a sliding ele ment of a rotary locking memberreleasa ble upon the insertion of a key, means connecting said slidingelement to said rotary locking member for rotating thesame upon adisplacement ofthe sliding element and a stop carried by saidloekingmember, said stop being moved to operative position when saidlockingmember is rotated.

The foregoing specification signed at: Essen, Germany, this 29th day ofSeptember, 1921.

EDUARD (DSTM'EYER.

